Finding the Fourth Proportional to 173,478,163.16, 239,397,631.68 and 99,137,872.40
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Solution
The fourth proportional to 173,478,163.16, 239,397,631.68 and 99,137,872.40 is: 136,808,987.54
Step by Step Solution
- Step 1: Write the proportion equation
173,478,163.16 : 239,397,631.68 = 99,137,872.40 : x - Step 2: Convert to fraction form
173,478,163.16/239,397,631.68 = 99,137,872.40/x - Step 3: Cross multiply
173,478,163.16x = 239,397,631.68 × 99,137,872.40 - Step 4: Simplify right side
173,478,163.16x = 23,733,371,862,354,040 - Step 5: Solve for x
x = 23,733,371,862,354,040/173,478,163.16 - Step 6: Final answer
x = 136,808,987.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.